T143 Long Block Twin Cam Engines / '99-'17 Big Twins

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Unleash unparalleled power and performance in your Harley Davidson with the S&S Cycles T143 Long Block Twin Cam Engine. Designed to fit within the stock chassis of '99-'17 Harley models without any cutting or frame modifications, this engine is the pinnacle of performance upgrades. Here’s why the T143 Long Block Twin Cam Engine is a must-have for serious riders:

Key Features:

• Fits in Stock Chassis: Engineered to seamlessly integrate into your Harley’s stock chassis, making installation straightforward without any need for frame modifications.
• S&S B3 Cylinder Heads: CNC-machined for precision, with two-bolt exhaust flanges, these cylinder heads are at the heart of the engine's superior performance.
• S&S Super Stockâ„¢ T2 Crankcases: Equipped with a reed breather valve and three-piece flywheels, the crankcases are designed for durability and optimal performance.
• S&S TC3 Oil Pump and Cam Plate: Ensures efficient oil circulation and pressure for reliable engine operation.
• S&S 635 Easy-Start Gear Drive Cams: Paired with 1.725:1 rocker arms for a total lift of .674”, these cams contribute to the engine's smooth yet powerful performance.
• High Compression Ratio: With a 10.5:1 compression ratio, this engine delivers powerful combustion for unmatched performance.
• 4.425” Bore x 4 5/8” Stroke: The dimensions of the engine components are optimized for power, providing a thrilling riding experience.
• Made in the U.S.A.: Proudly designed and manufactured in the United States, ensuring quality and durability.

Why Choose the T143 Long Black Twin Cam Engine?

• Unmatched Power: Elevate your ride with double the horsepower of a stock motor, offering an exhilarating performance boost.
• Durability and Precision: From the CNC-machined cylinder heads to the robust crankcases, each component is designed for longevity and precise operation.
• Customizable Installation: Despite its power, the engine fits within the stock chassis, offering a custom upgrade without extensive modifications.
• Comprehensive Design: With revised oil line routing for '99-'07 applications, the engine simplifies installation by eliminating the need for additional kits.

Installation Tips:

• Professional Installation Recommended: Due to the high-performance nature of this engine, professional installation and tuning are recommended to ensure optimal performance and longevity.
• Compatibility Check: Ensure your Harley model is compatible with the T143 engine, especially if it has unique specifications or custom modifications.

Transform your Harley Davidson with the S&S Cycles T143 Long Black Twin Cam Engine and experience a new level of power and performance that only S&S Cycles can deliver.

• Top Motor Mounts Required on '08-'16 Touring Models - Click Here for Motor Mounts
• Oil Line Installation Kit must be purchase for '07-'16 Twin Cam Engines - Click Here for Install Kit
• Does not include carb/intake or ignition system. Must be purchased separately. See Tuners / Fuel Systems Section.
• T143-specific or custom exhaust required.
• '07-'16 Engines Not Recommended for Trike Models